package com.pn.config;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 用以拦截未登录请求的拦截器
 */
public class LoginHandlerInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        Object loginUser = request.getSession().getAttribute("loginUser");
        if(loginUser == null){
            request.setAttribute("msg","还没登录");
            request.getRequestDispatcher("/login.html").forward(request,response);
            return false;
        }else {
            return true;
        }
    }

}
